Apologies if this is in the wrong place. I have bought my train mad 6 year old his 1st hornby set for Christmas (a HS1 southeastern). He has since written a letter to Santa asking for a Northern rail train!! I have bought one from eBay but it has a predominately white Livery & not something I have seen before. I know he will ask questions about this & I was wondering if anyone knows if Northern still run these trains & if so are they on a particular line as I would like him to see one before he opens his present. If not I will have to make him believe they are special & he needs to keep his eyes peeled 
Thanks in advance.

Thanks in advance.